A:
Positive:
1 x 1307873155 x 2615746323 x 5686405115 x 1137281197 x 663895251 x 521065529 x 247235985 x 1327791255 x 1042132645 x 494474531 x 288655773 x 22655
Negative:
-1 x -130787315-5 x -26157463-23 x -5686405-115 x -1137281-197 x -663895-251 x -521065-529 x -247235-985 x -132779-1255 x -104213-2645 x -49447-4531 x -28865-5773 x -22655
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 130,787,315, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 130,787,315 | |
| -1 | -130,787,315 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,787,315.
Example:
1 x 130,787,315 = 130,787,315
and
-1 x -130,787,315 = 130,787,315
Notice both answers equal 130,787,315
With that explanation out of the way, let's continue. Next, we take the number 130,787,315 and divide it by 2:
130,787,315 ÷ 2 = 65,393,657.5
If the quotient is a whole number, then 2 and 65,393,657.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 130,787,315 | |
| -1 | -130,787,315 |
Now, we try dividing 130,787,315 by 3:
130,787,315 ÷ 3 = 43,595,771.6667
If the quotient is a whole number, then 3 and 43,595,771.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 130,787,315 | |
| -1 | -130,787,315 |
Let's try dividing by 4:
130,787,315 ÷ 4 = 32,696,828.75
If the quotient is a whole number, then 4 and 32,696,828.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 130,787,315 | |
| -1 | 130,787,315 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 197 | 251 | 529 | 985 | 1,255 | 2,645 | 4,531 | 5,773 | 22,655 | 28,865 | 49,447 | 104,213 | 132,779 | 247,235 | 521,065 | 663,895 | 1,137,281 | 5,686,405 | 26,157,463 | 130,787,315 |
| -1 | -5 | -23 | -115 | -197 | -251 | -529 | -985 | -1,255 | -2,645 | -4,531 | -5,773 | -22,655 | -28,865 | -49,447 | -104,213 | -132,779 | -247,235 | -521,065 | -663,895 | -1,137,281 | -5,686,405 | -26,157,463 | -130,787,315 |
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